＃ <Faraday::ConnectionFailed> 连接被拒绝 - 连接（2）

Question

I am receiving the message #<Faraday::ConnectionFailed> Connection refused - connect(2) after using checkboxes to select items in users/edit.html.erb and pressed save. The items I selected are in an array called amenities_list . These items are booleans. After trying to save the changes I received #<Faraday::ConnectionFailed> .

users/edit.html.erb

<div class="tab-content group">

  <% amenities_list = User.amenities_list %>

  <ul>
    <% @user.boolean_array_from_amenities_integer.each_with_index do |amenity_available,index| %>
      <% if amenity_available %>
        <li class="available-amenity">
      <% else %>
        <li class="unavailable-amenity">
      <% end %>
          <%= amenities_list[index] %>
        </li>
    <% end %>
  </ul>
</div>

users_controller.rb

  def new
    @user = User.new
  end

  def create
    @user = User.new(params[:user])
    @user.id = current_user.id
    @user.set_amenities_from_options_list!(params[:user_amenities_indicies])
    if @user.save
      flash[:success] = "Thank you for signing up! A confirmation email has been sent to your inbox"
      redirect_to users_path
    else
      render :new
    end
  end

  def edit
    @user.id = current_user.id
    @user.set_amenities_from_options_list!(params[:user_amenities_indicies])
  end

user.rb

  def self.amenities_list
    ["Smoking Allowed",
     "Pets Allowed",
     "TV",
     "Cable TV",
     "Internet",
     "Wireless Internet",
     "Air Conditioning",
     "Heating",
     "Elevator in Building",
     "Handicap Accessible",
     "Pool",
     "Kitchen",
     "Free parking on premise",
     "Doorman",
     "Gym",
     "Hot Tub",
     "Indoor Fireplace",
     "Buzzer/Wireless Intercom",
     "Breakfast",
     "Family/Kid Friendly",
     "Suitable for Events",
     "Washer",
     "Dryer"]
  end

  def self.integer_from_options_list(options_list)
    # convert options list given by radio buttons into one-hot integer
    amenities = 0;
    if options_list
      options_list.each do |option|
        amenities += 2 ** option.to_i
      end
  end

    amenities
  end

   def self.find_with_filters(filters)
    filtered_users = User
        if filters[:amenities]
          amenities = User.integer_from_options_list(filters[:amenities])
          filtered_users = filtered_users.where("amenities & ? = ?", amenities, amenities)
        end
    end


 def set_amenities_from_options_list!(options_list)
    self.amenities = User.integer_from_options_list(options_list)
  end

    def boolean_array_from_amenities_integer
    [].tap do |amenities_list|
      User.amenities_list.length.times do |order|
        amenities_list << (self.amenities & 2 ** order > 0)
        end
      end
    end

end

gemfile.lock

GEM
  remote: https://rubygems.org/
  specs:
    actionmailer (4.0.3)
      actionpack (= 4.0.3)
      mail (~> 2.5.4)
    actionpack (4.0.3)
      activesupport (= 4.0.3)
      builder (~> 3.1.0)
      erubis (~> 2.7.0)
      rack (~> 1.5.2)
      rack-test (~> 0.6.2)
    activemodel (4.0.3)
      activesupport (= 4.0.3)
      builder (~> 3.1.0)
    activerecord (4.0.3)
      activemodel (= 4.0.3)
      activerecord-deprecated_finders (~> 1.0.2)
      activesupport (= 4.0.3)
      arel (~> 4.0.0)
    activerecord-deprecated_finders (1.0.3)
    activesupport (4.0.3)
      i18n (~> 0.6, >= 0.6.4)
      minitest (~> 4.2)
      multi_json (~> 1.3)
      thread_safe (~> 0.1)
      tzinfo (~> 0.3.37)
    arel (4.0.2)
    atomic (1.1.16)
    bcrypt (3.1.7)
    bcrypt-ruby (3.1.5)
      bcrypt (>= 3.1.3)
    bootstrap-sass (3.1.1.0)
      sass (~> 3.2)
    builder (3.1.4)
    capybara (2.1.0)
      mime-types (>= 1.16)
      nokogiri (>= 1.3.3)
      rack (>= 1.0.0)
      rack-test (>= 0.5.4)
      xpath (~> 2.0)
    carrierwave (0.10.0)
      activemodel (>= 3.2.0)
      activesupport (>= 3.2.0)
      json (>= 1.7)
      mime-types (>= 1.16)
    childprocess (0.5.1)
      ffi (~> 1.0, >= 1.0.11)
    coderay (1.1.0)
    coffee-rails (4.0.1)
      coffee-script (>= 2.2.0)
      railties (>= 4.0.0, < 5.0)
    coffee-script (2.2.0)
      coffee-script-source
      execjs
    coffee-script-source (1.7.0)
    columnize (0.3.6)
    debugger (1.6.6)
      columnize (>= 0.3.1)
      debugger-linecache (~> 1.2.0)
      debugger-ruby_core_source (~> 1.3.2)
    debugger-linecache (1.2.0)
    debugger-ruby_core_source (1.3.2)
    diff-lcs (1.2.5)
    elasticsearch (1.0.2)
      elasticsearch-api (= 1.0.2)
      elasticsearch-transport (= 1.0.2)
    elasticsearch-api (1.0.2)
      multi_json
    elasticsearch-model (0.1.4)
      activesupport (> 3)
      elasticsearch (> 0.4)
      hashie
    elasticsearch-transport (1.0.2)
      faraday
      multi_json
    erubis (2.7.0)
    execjs (2.0.2)
    factory_girl (4.2.0)
      activesupport (>= 3.0.0)
    factory_girl_rails (4.2.1)
      factory_girl (~> 4.2.0)
      railties (>= 3.0.0)
    faker (1.3.0)
      i18n (~> 0.5)
    faraday (0.9.0)
      multipart-post (>= 1.2, < 3)
    ffi (1.9.3)
    figaro (0.7.0)
      bundler (~> 1.0)
      rails (>= 3, < 5)
    geocoder (1.1.9)
    hashie (3.0.0)
    hike (1.2.3)
    i18n (0.6.9)
    jbuilder (1.5.3)
      activesupport (>= 3.0.0)
      multi_json (>= 1.2.0)
    jquery-rails (3.1.0)
      railties (>= 3.0, < 5.0)
      thor (>= 0.14, < 2.0)
    jquery-ui-rails (4.2.0)
      railties (>= 3.2.16)
    json (1.8.1)
    jwt (0.1.11)
      multi_json (>= 1.5)
    mail (2.5.4)
      mime-types (~> 1.16)
      treetop (~> 1.4.8)
    method_source (0.8.2)
    mime-types (1.25.1)
    mini_magick (3.7.0)
      subexec (~> 0.2.1)
    mini_portile (0.5.2)
    minitest (4.7.5)
    multi_json (1.9.0)
    multi_xml (0.5.5)
    multipart-post (2.0.0)
    nokogiri (1.6.1)
      mini_portile (~> 0.5.0)
    oauth (0.4.7)
    oauth2 (0.9.3)
      faraday (>= 0.8, < 0.10)
      jwt (~> 0.1.8)
      multi_json (~> 1.3)
      multi_xml (~> 0.5)
      rack (~> 1.2)
    pg (0.17.1)
    polyglot (0.3.4)
    pry (0.9.12.6)
      coderay (~> 1.0)
      method_source (~> 0.8)
      slop (~> 3.4)
    pry-debugger (0.2.2)
      debugger (~> 1.3)
      pry (~> 0.9.10)
    quiet_assets (1.0.2)
      railties (>= 3.1, < 5.0)
    rack (1.5.2)
    rack-test (0.6.2)
      rack (>= 1.0)
    rails (4.0.3)
      actionmailer (= 4.0.3)
      actionpack (= 4.0.3)
      activerecord (= 4.0.3)
      activesupport (= 4.0.3)
      bundler (>= 1.3.0, < 2.0)
      railties (= 4.0.3)
      sprockets-rails (~> 2.0.0)
    rails_12factor (0.0.2)
      rails_serve_static_assets
      rails_stdout_logging
    rails_serve_static_assets (0.0.2)
    rails_stdout_logging (0.0.3)
    railties (4.0.3)
      actionpack (= 4.0.3)
      activesupport (= 4.0.3)
      rake (>= 0.8.7)
      thor (>= 0.18.1, < 2.0)
    rake (10.1.1)
    rdoc (4.1.1)
      json (~> 1.4)
    rspec-core (2.13.1)
    rspec-expectations (2.13.0)
      diff-lcs (>= 1.1.3, < 2.0)
    rspec-mocks (2.13.1)
    rspec-rails (2.13.1)
      actionpack (>= 3.0)
      activesupport (>= 3.0)
      railties (>= 3.0)
      rspec-core (~> 2.13.0)
      rspec-expectations (~> 2.13.0)
      rspec-mocks (~> 2.13.0)
    rubyzip (0.9.9)
    sass (3.2.15)
    sass-rails (4.0.2)
      railties (>= 4.0.0, < 5.0)
      sass (~> 3.2.0)
      sprockets (~> 2.8, <= 2.11.0)
      sprockets-rails (~> 2.0.0)
    sdoc (0.4.0)
      json (~> 1.8)
      rdoc (~> 4.0, < 5.0)
    selenium-webdriver (2.35.1)
      childprocess (>= 0.2.5)
      multi_json (~> 1.0)
      rubyzip (< 1.0.0)
      websocket (~> 1.0.4)
    simple_form (3.0.1)
      actionpack (>= 4.0.0, < 4.1)
      activemodel (>= 4.0.0, < 4.1)
    slop (3.5.0)
    sorcery (0.8.5)
      bcrypt-ruby (>= 3.0)
      oauth (~> 0.4.4)
      oauth2 (>= 0.8.0, < 1.0.0)
    sprockets (2.11.0)
      hike (~> 1.2)
      multi_json (~> 1.0)
      rack (~> 1.0)
      tilt (~> 1.1, != 1.3.0)
    sprockets-rails (2.0.1)
      actionpack (>= 3.0)
      activesupport (>= 3.0)
      sprockets (~> 2.8)
    state_machine (1.2.0)
    subexec (0.2.3)
    thor (0.18.1)
    thread_safe (0.2.0)
      atomic (>= 1.1.7, < 2)
    tilt (1.4.1)
    treetop (1.4.15)
      polyglot
      polyglot (>= 0.3.1)
    tzinfo (0.3.39)
    uglifier (2.5.0)
      execjs (>= 0.3.0)
      json (>= 1.8.0)
    websocket (1.0.7)
    xpath (2.0.0)
      nokogiri (~> 1.3)

PLATFORMS
  ruby

DEPENDENCIES
  bootstrap-sass (~> 3.1.1)
  capybara (= 2.1.0)
  carrierwave
  coffee-rails (~> 4.0.0)
  elasticsearch-model
  factory_girl_rails (= 4.2.1)
  faker
  figaro
  geocoder
  jbuilder (~> 1.2)
  jquery-rails
  jquery-ui-rails
  mini_magick
  pg
  pry-debugger
  quiet_assets
  rails (= 4.0.3)
  rails_12factor
  rspec-rails (= 2.13.1)
  sass-rails (~> 4.0.0)
  sdoc
  selenium-webdriver (= 2.35.1)
  simple_form
  sorcery
  state_machine
  uglifier (>= 1.3.0)

Answer 1

if message #<Faraday::ConnectionFailed> Connection refused - connect(2) is followed by Connection refused - connect(2) for "localhost" port 9200

then make sure elastic search service is running or not by using the command

curl localhost:9200

Normally, elastic search receives request at port 9200 . If not running you need to start by using command ( in Ubuntu ) sudo service elasticsearch start . Wait for a few seconds and try again.